JP2003285722A - On-vehicle portable theftproof device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an on-vehicle portable theftproof device being capable of easy after-mounting and preventing a malpractitioner from easily cancelling an alarm. <P>SOLUTION: The theftproof device comprises one or more portable theft detectors having alarming means and a portable terminal. Wireless communication is allowed between the theft detector and the portable terminal. When one of the theft detectors detects a theft, the alarming means of the theft detector is operated and the theft detector transmits theft information to the portable terminal. The theft detector consists of a host to be installed inside a vehicle and a plurality of cordless units to be installed inside or outside the vehicle. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle antitheft device for preventing vehicle theft, and more particularly to a portable antitheft device which is easy to install.

[0002]

2. Description of the Related Art A conventional on-vehicle antitheft device is for preventing the theft of a vehicle.
As disclosed in Japanese Patent No. 258836, when the door lock switch is opened by an operation other than the proper operation, it is determined that the vehicle is stolen, and an alarm can be issued, the engine can be turned off, or the seat or steering wheel can be moved to drive the vehicle. This will prevent the vehicle from being stolen.

[0003]

However, such an embedding method is complicated to mount. In addition, installation by a specialist may be necessary.

On the other hand, if an alarm device or the like can be easily attached later, it cannot cope with the case where the criminal throws out the alarm device itself.

[0005] Therefore, an object of the present invention is to make it possible to easily attach the alarm later and to prevent the criminal from easily releasing the alarm.

[0006]

In order to solve the above-mentioned problems, according to the present invention, as described in claim 1, there is provided an anti-theft device having two or more anti-theft detection devices equipped with alarm means. When any one of the theft detection devices detects a theft, the other theft detection device gives an alarm. According to this, when one of the theft detection devices detects the theft and issues an alarm, the criminal may break the alarmed theft detection device or throw it out of the vehicle. But other theft detection devices continue to give alarms.

In order to solve the above-mentioned problems, the present invention comprises, as claimed in claim 2, one or more portable theft detection devices provided with an alarm means, and a portable terminal. A theft prevention device, which wirelessly communicates between the theft detection device and the mobile terminal, and when one of the theft detection devices detects theft, activates an alarm means of the theft detection device and detects the theft. The device is adapted to transmit the theft information to the mobile terminal. According to this, when one of the theft detection devices detects a theft, the theft detection device itself can issue an alarm and can notify the portable terminal that the theft has occurred.

Further, as described in claim 3, in claim 1 or 2, the anti-theft device is an anti-theft device for installation inside the vehicle which is a parent device, and an anti-theft detection device for installation inside or outside the vehicle which is a child device. If the device is provided, the child device can be attached to the engine room, the luggage room, or the bottom surface of the vehicle.

Further, as described in claim 4, in claim 3, by providing a camera for photographing the inside of the vehicle in the theft detection device serving as the parent device, a criminal at the time of vehicle theft can be left as an image. it can.

Further, as described in claim 5, in claim 3 or 4, the theft detection device serving as the parent device has a cylindrical outer shape so that it can be installed in a cup holder of a vehicle. Since it is easy to misunderstand that the theft detection device that is the master device is can juice or the like, it is difficult for the criminal to find the theft detection device that is the master device, and it is easy for the criminal to alert the alarm.

Further, as described in claim 6, in claim 3, the slave unit itself is provided with an alarm by providing an inclination sensor for detecting its inclination and an alarm buzzer in the theft detection device serving as the slave unit. You can ring the buzzer. Further, when the criminal notices the child device and picks up the child device, the child device tilts, so that throwing of the child device can be detected.

Further, as described in claim 7, in claim 1 or 2, the theft detection device is provided with a wire having one end fixed and a hook capable of fixing the other end of the wire, The theft detection device can be attached to a fixed object of the vehicle.

Further, as described in claim 8, in claim 3, the theft detection device serving as the parent device is provided with a tilt sensor for detecting its own tilt and an alarm buzzer, so that the parent device can be stolen. When the alarm is detected and an alarm is issued, when the criminal notices the base unit and picks up the base unit, the base unit is tilted, so that the dumping of the base unit can be detected.

Further, as described in claim 9, in claim 3, the theft detection device serving as the parent device amplifies the received ultrasonic wave or sound wave by a receiver for receiving the ultrasonic wave or sound wave. By installing a transmitter that transmits and forms a standing wave inside the vehicle and a theft detection means that detects that the standing wave has collapsed from the received signal of the receiver, the window can be broken. , When the door is opened or there is an intruder inside the vehicle, the state of the standing wave inside the vehicle changes, so
Intrusion into the passenger compartment can be detected.

Further, as described in claim 10, in claim 9, when the theft detection device serving as the parent device is provided with at least three transmitters, a range in which a standing wave can be formed is limited. spread.

Further, as set forth in claim 11, in claim 9, the theft detection device serving as the parent device reflects a directional transmitter on a cylindrical mirror to radiate a sound wave in a wide angle. With this configuration, the range in which standing waves can be formed is expanded.

Further, as described in claim 12, in claim 2, the alarm device is provided with a camera for photographing the inside of the vehicle, and after the theft detection device detects the theft, the photographing information in the vehicle is carried to the portable information terminal. If you send it to the terminal, you can watch the video of the criminal on the mobile terminal.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the antitheft device of the present invention will be described below.

FIG. 1 is a conceptual diagram showing the arrangement of a theft prevention device according to an embodiment of the present invention in a vehicle 1. Inside the vehicle 1, a cup holder 2 for placing a can-shaped beverage container such as canned juice, a PET bottle, and a paper cup near the driver's seat.
Is installed. The master unit 4 of the theft detection device having a shape to be inserted into the cup holder 2 is placed on the cup holder 2. Further, a plurality of slave units 5 and 6 of the theft detection device are placed inside and outside the vehicle. In addition to this, although not shown in FIG. 1, a mobile terminal 9 that is always carried by a vehicle user is provided.

As shown in FIG. 2, the base unit 4 of the theft detection device has a can shape. Its size is the same as that of 350 ml canned juice. Inside this, one piezoelectric ultrasonic receiver 12, three piezoelectric ultrasonic transmitters 13 directed in different directions, a flashlight 14, a small CMOS camera 15, a decision logic circuit 16, an alarm buzzer 1
7, a tilt sensor 18, a chain 19, a hook 20, and a battery (not shown) serving as a power source for the above circuits and the like.
Further, the antenna 11 is exposed to the outside. This base unit 4
Is portable and can be easily attached to the cup holder 2 of the vehicle.

The piezoelectric ultrasonic receiver 12 and the piezoelectric ultrasonic transmitter 13 are connected to the circuit shown in FIG. 6 to form an intrusion sensor. The ultrasonic waves received by the piezoelectric ultrasonic receiver 12 are inverted and amplified by the inverting amplifier circuit,
It is further amplified by the non-inverting amplifier circuit with (auto gain control) and sent to the piezoelectric ultrasonic transmitter 13. Therefore, the piezoelectric ultrasonic transmitter 13 emits ultrasonic waves inside the vehicle compartment. The emitted ultrasonic waves are again received by the piezoelectric ultrasonic receiver 12. Since the non-inverting amplifier circuit with AGC appropriately adjusts the amplification factor of ultrasonic waves and self-excitedly transmits with the above circuit configuration, when the interior of the vehicle interior forms a closed space, the ultrasonic waves in the vehicle interior are Standing waves are formed. An effective value circuit is provided between the inverting amplifier circuit and the non-inverting amplifier circuit with AGC, and the effective value is measured and sent to the comparator. The effective value is kept constant when the vehicle interior maintains a closed space. Here, when the closed space in the vehicle interior collapses, the effective value changes. For example, when a window is broken, a door is opened, or an intruder exists inside the vehicle, the state of the standing wave inside the vehicle changes. When the effective value changes according to such an intrusion situation, the comparator determines that there is an intrusion and outputs an alarm.

As shown in FIG. 3, the portable terminal 9 is provided with an antenna 21 for communication, a liquid crystal display 22, and a button 23 for operating. Liquid crystal display 22
Can display the unauthorized entry into the vehicle 1, the impact on the vehicle, and the movement of the vehicle. Moreover, a still image or a moving image can be displayed.

As shown in FIG. 5, the slaves 5 and 6 of the theft detection device are provided with a communication antenna 24, a tilt sensor 25, an alarm buzzer 26, a judgment logic circuit (not shown) and a battery.

The anti-theft device having the above structure has a relation as shown in FIG. The antenna 11 of the parent device 4, the antenna 24 of the child devices 5 and 6, and the antenna 21 of the mobile terminal 9 are capable of communicating with each other. Although not shown,
The parent device 4, the child devices 5 and 6, and the mobile terminal 9 confirm the current status (sensor detection, abnormality, failure, etc.) by mutual communication. When there is no communication from one of the parent device 4 and one of the child devices 5 and 6, it can be known that the device has been destroyed or has failed.

The parent device 4 can detect the entry into the vehicle compartment by the intrusion sensor 30 and the discarding of the parent device 4 by the inclination sensor 18, and outputs these information to the decision logic circuit 16. . The determination logic circuit 16 makes a determination based on information from other devices such as the intrusion sensor 30, the inclination sensor 18, and the antenna 11, and controls the flashlight 14, the small CMOS camera 15, the alarm buzzer 17, and the like.
Information is transmitted from the antenna 11 to other devices.

The slave units 5 and 6 can detect the discarding of the slave units 5 and 6 by the inclination sensor 25, and outputs this information to the decision logic circuit 36. The decision logic circuit 36 is
Judgment is made based on the information from the tilt sensor 25 and the antenna 24 from other devices, and the alarm buzzer 17 is controlled and the information is transmitted from the antenna 24 to the other devices.

The portable terminal 9 can detect the input of the button 23 and outputs this information to the control circuit 37. In response to a button input, the control circuit 37 starts the anti-theft function, makes a judgment based on the information from other devices from the antenna 21, issues an alarm from the speaker 35, and displays alarm information on the display 22. Let Also,
The display content of the display 22 is switched according to the input of the button 23. It should be noted that the situation inside the vehicle may be displayed when the button is pressed in the normal state.

The decision logic circuit of the master unit 4 and the slave units 5, 6 is
The intrusion detection control is started by an instruction from the mobile terminal 9.

FIG. 8 shows an intrusion detection control routine of the decision logic circuit 16 of the master unit 4. This routine starts when an instruction to start the intrusion detection is received from the mobile terminal 9. Also,
The process ends when an instruction to end the intrusion detection is received from the mobile terminal 9.

Here, first, the notification from the child device or the detection of an intruder is performed. When there is a notification from the child device or when an intrusion is detected by the intrusion sensor 30, the flashlight 14 is cooked and a small CMOS camera 15 captures an image inside the vehicle. Further, subsequently, the alarm buzzer 17 is sounded to give an alarm. Further, the mobile terminal 9 is notified via the antenna 11. At this time, the image of the CMOS camera 15 is also sent to the mobile terminal 9.

Subsequently, the destruction and dumping of the base unit 4 are detected. This is judged by the inclination sensor 18 detecting the inclination of the parent device 4. When the destruction or dumping of the base unit 4 is detected, the mobile units 5 and 6 and the mobile terminal 9 are notified via the antenna 11.

FIG. 9 shows an intrusion detection control routine of the decision logic circuit 36 of the slaves 5 and 6. This routine is for mobile terminal 9
It starts when an instruction to start intrusion detection is received from. Further, the processing ends when an instruction to end the intrusion detection is received from the mobile terminal 9.

Here, first, the destruction and discarding of the slave units 5 and 6 are detected. This is judged by the inclination sensor 25 detecting the inclination of the slave units 5, 6. When it is detected that the slave units 5 and 6 are destroyed or discarded, the base unit 4 and the mobile terminal 9 are notified via the antenna 11.

Subsequently, a notification or an intruder is detected from the master unit 4 and other slave units. When there is a notification from the parent device 4 or another child device, the alarm buzzer 17 is sounded to give an alarm.

When the tilt sensors 18 and 25 in the parent device 4 and the child devices 5 and 6 instantaneously detect the tilt, it can be seen that the vehicle is impacted. Also in this case, the mobile terminal 9
Has been notified that there was a shock. Further, when the inclination sensors 18 and 25 intermittently detect the inclination, it is understood that the vehicle is moving. In this case as well, the mobile terminal 9 is notified of the movement.

FIG. 10 shows a control routine of the mobile terminal 9. This routine is started when the start of the intrusion detection is received from the button 23. Further, the process is ended when the end of the intrusion detection is received from the button 23. Further, although not shown, when receiving the start of the intrusion detection, an instruction to start the intrusion detection is given to the master unit 4 and the slave units 5 and 6 via the antenna 21.

Here, first, it is determined whether or not a notification has been received from the master unit 4 or the slave units 5 and 6. When a notification is received from the parent device 4 or the child devices 5 and 6, the content of the notification is displayed on the display 22. In addition, the speaker 35 outputs information indicating that there is a notification.

Subsequently, the display 2 is operated by operating a button.
It is determined whether or not the display content of 2 is switched, and the display image of the display 22 is switched according to the button operation.

The display 22 is, as shown in FIG.
When the parent device 4 detects the intrusion, it indicates that there is an intrusion. Further, when there is a shock or a movement, the display 22 displays that fact. Display 22 has button 2
In response to the operation of No. 3, as shown in FIG. 4, the in-vehicle photographed image received from the parent device 4 is displayed. In addition, the master unit 4, the slave units 5, 6
The current status (sensor detection, abnormality, failure, etc.) may be displayed.

In order to use the anti-theft device having the above structure, the user first sets the base unit 4 to the cup holder in the vehicle,
Adjust so that the angle of view of the camera is within the driver's seat. This direction is preferably such that the driver's seat 7 and the door 3 of the driver's seat can be photographed by the camera 15, as shown in the area 8 of FIG. The master unit 4 has a chain 1 to make it difficult to take out.
After 9 is passed through a steering wheel or the like, it is fixed to the hook 20. In addition, the slave units 5 and 6 are installed in the engine room of the vehicle 1, the luggage room, or the like. After that, the start of the intrusion detection is instructed by the button operation of the mobile terminal 9. By this start instruction, the parent device 4 and the child devices 5 and 6 start theft detection.

In this state, when the criminal unlocks the vehicle door by some method and enters the vehicle interior, the parent device 4 detects the entry and sounds an alarm buzzer. At this time, the main | base station 4 makes a flash light blink, it shoots a video of an intruder with a camera, and also notifies the portable terminal 9 with a video. When an intruder breaks the base unit 4 or cuts the chain 19 and throws the base unit 4 out of the vehicle, the handset units 5 and 6 sound an alarm buzzer. By sounding the alarms of the slaves simultaneously or individually, it is possible to delay the discovery of the slaves, and by gaining time to steal, the possibility of theft can be reduced.

When the child devices 5 and 6 are first detected by the criminal and attempted to be removed, the child devices 5 and 6 incline, and thus the parent device 4
Or other child device is notified, and the alarm buzzer of the parent device or child device sounds. If the criminal ignores this and opens the door and tries to enter the driver's seat, the camera of the base unit takes an image of the image and sends it to the mobile terminal together with a notification.

In the above configuration, the mobile terminal 9 may be a mobile phone.

The position of the slave unit may be set in the engine room of the vehicle 1, the luggage room, the wheel house, the vehicle bottom surface, or the like. A place that is as hard to find as possible is good. Alternatively, it may be attached to the back of the hood of the engine room of the vehicle 1 or the back of the luggage compartment door of the luggage room. In this case, simply opening the hood or luggage compartment door activates the alarm.

In the above structure, the number of piezoelectric ultrasonic transmitters 13 may be three or more. Further, as shown in FIG. 11, a single type of transmitter may be a master unit equipped with a transmitter for emitting ultrasonic waves in a wide angle. Figure 11
In the above, the parent device 4 includes a cylindrical mirror type piezoelectric ultrasonic transmitter 27, a piezoelectric ultrasonic receiver 28, and a flashlight 1.
4. A small CMOS camera 15, a decision logic circuit 16, an alarm buzzer 17, a tilt sensor 18, etc. are provided. As shown in FIG. 12, the cylindrical mirror type piezoelectric ultrasonic transmitter 27 diffuses the transmitted ultrasonic waves in the circumferential direction and transmits the ultrasonic waves, and one transmitter is equivalent to a plurality of transmitters. It fulfills its function.

In the above structure, the base unit may be installed not in the cup holder but in another place where the driver's seat is visible, such as the upper chair of the passenger seat. When installing the base unit, the image taken by the camera of the base unit can be adjusted while displaying the image on the mobile terminal so that the base unit can be installed at an appropriate position and orientation. The camera image may be a still image or a moving image.

The shape of the parent device may be changed to a shape that is hard to find, such as a PET bottle shape, a paper cup shape, etc., in addition to the can juice shape.

As described above, according to the anti-theft device of this embodiment, the anti-theft device has two or more anti-theft devices provided with the alarm buzzer as the alarm means.
When any one of the theft detection devices detects a theft, the other theft detection device gives an alarm. According to this, when one of the theft detection devices detects theft and gives an alarm, the criminal breaks the alarmed theft detection device,
Although it may be thrown out of the vehicle, even in this case, the other criminal theft detection device keeps issuing the alarm, and thus there is a high possibility that the criminal gives up the theft of the vehicle.

Further, a portable terminal 9 is provided so that the theft detection device and the portable terminal wirelessly communicate with each other, and when one of the theft detection devices detects theft, an alarm buzzer which is an alarm means of the theft detection device is activated. In addition, the theft detection device transmits the theft information to the mobile terminal. According to this, when one of the theft detection devices detects a theft, the theft detection device itself can issue an alarm and can notify the portable terminal that the theft has occurred. Therefore, the user holding the mobile terminal can immediately know that the theft has occurred.

Further, since the vehicle has a theft detection device 4 for installation inside the vehicle, which serves as a parent device, and the theft detection devices 5 and 6 for installation inside or outside the vehicle, which serves as a child device, the child device is installed in the engine room and luggage. It can be attached to the room or the bottom of the vehicle, making it more difficult to steal.

Further, the theft detection device 4 serving as a master unit.
In addition, by providing the camera 15 for photographing the inside of the vehicle, the criminal at the time of the vehicle theft can be left as an image.

Further, the theft detection device 4 serving as a parent device has a cylindrical outer shape so that it can be installed in a cup holder of a vehicle, so that the theft detection device serving as a parent device can be easily mistaken for canned juice or the like. This makes it harder for the criminal to find the theft detection device, which is the master device, and also makes it easier for the criminal to give an alarm when alert.

In addition, the theft detection devices 5 and 6 which are slaves,
Inclination sensor 25 and alarm buzzer 26 that detect the inclination of oneself
By providing, when the base unit detects theft and issues an alarm, even if the criminal breaks or throws the base unit,
The handset can sound an alarm buzzer. In addition, when the criminal notices the slave and picks up the slave, the slave itself can issue an alarm buzzer. Further, when the slave is attached to the trunk door or the back of the hood, the alarm buzzer can be sounded when the criminal opens the trunk or the hood. Furthermore, even if the criminal breaks or throws away the slave unit in which the alarm buzzer sounds, the master unit or another slave unit can issue an alarm.

Further, by providing the theft detection device 4 with the wire 19 having one end fixed and the hook 20 capable of fixing the other end of the wire 19, the theft detection device can be fixed to a vehicle fixed object such as a steering wheel. Can be installed,
It is difficult to throw the theft detection device.

Further, the theft detection device 4 serving as the parent device is provided with the tilt sensor 18 for detecting its own tilt and the alarm buzzer 17, so that when the parent device 4 detects the theft and issues an alarm, the criminal can When the parent device 4 is picked up and the parent device 4 is picked up, the parent device 4 tilts, so that theft can be detected. When one of the slaves 5 and 6 detects theft and issues an alarm,
Even if the criminal breaks or throws away the slaves 5, 6, the master 4 can sound the alarm buzzer.

Further, the theft detection device 4 serving as a master unit, a receiver 12 which receives an ultrasonic wave or a sound wave, and a transmission which amplifies and transmits the received ultrasonic wave or a sound wave to form a standing wave inside the vehicle. By providing the machine 13 and the comparator 34, which is a theft detection means for detecting the breakage of the standing wave from the received signal of the receiver, it is possible to open windows, open doors, When there is an intruder in the vehicle, the state of the standing wave inside the vehicle changes, so that an alarm can be issued.

Further, by providing at least three transmitters 13 in the theft detection device 4 serving as a parent device, the range in which standing waves can be formed is widened and the range in which theft can be detected is widened.

In addition, the theft detection device, which is the master unit, uses a cylindrical mirror type piezoelectric ultrasonic transmitter 27 in which a directional transmitter is reflected by a cylindrical mirror to emit a sound wave at a wide angle. By having it, the range where the standing wave can be formed is widened, and the range where the theft can be detected is widened.

Further, the camera 1 for photographing the inside of the vehicle as an alarm device
5 is provided, and after the theft detection device detects the theft, if the shooting information in the vehicle is transmitted to the mobile terminal 9, the video of the criminal can be viewed on the mobile terminal 9, which can be useful for arresting the criminal. it can. Further, when the intruder is an acquaintance and the user has allowed the acquaintance to use the vehicle, the alarm can be promptly stopped.

[0060]

According to the invention described in claim 1, when one of the theft detection devices detects theft and issues an alarm, the criminal breaks the theft detection device which issued the alarm, or the outside of the vehicle. However, even in this case, since the other theft detection device keeps issuing the alarm, the possibility that the criminal gives up the theft of the vehicle increases. No big work is required to install the theft detection device, and the theft detection device can be easily attached later.

According to the second aspect of the present invention, when one of the theft detection devices detects theft, the theft detection device itself can give an alarm and notify the portable terminal of the theft. You can Therefore, the user holding the mobile terminal can immediately know that the theft has occurred.

According to the third aspect of the invention, since the slave unit can be attached to the engine room, luggage room, etc., or the bottom surface of the vehicle, it is more difficult to steal.

According to the invention described in claim 4, the criminal at the time of the vehicle theft can be left in the image. Therefore, it can be useful for arresting criminals. Further, when the intruder is an acquaintance and the user has allowed the acquaintance to use the vehicle, the alarm can be promptly stopped.

According to the invention described in claim 5, since the theft detection device serving as the parent device is easily mistaken for canned juice or the like, it is difficult for the criminal to find the theft detection device serving as the parent device and the criminal. Becomes alert and it becomes easy to give an alarm.

According to the invention described in claim 6, when the base unit detects theft and issues an alarm, the handset sounds the alarm buzzer even if the criminal breaks or throws the base unit. You can In addition, when the criminal notices the slave and picks up the slave, the slave itself can issue an alarm buzzer. Also, if the slave is attached to the trunk door or the back of the bonnet, an alarm buzzer can be sounded when the criminal opens the trunk or bonnet. Furthermore, even if the criminal breaks or throws away the slave unit in which the alarm buzzer sounds, the master unit or another slave unit can issue an alarm. Therefore, the criminal cannot easily cancel the alarm.

According to the seventh aspect of the present invention, the theft detection device can be attached to a fixed object of the vehicle, and it is difficult to throw the theft detection device. Therefore, the criminal cannot easily cancel the alarm.

According to the eighth aspect of the present invention, when the base unit detects the theft and issues an alarm, when the criminal notices the base unit and picks up the base unit, the base unit tilts. The dumping of can be detected. Also, when one of the slaves detects a theft and issues an alarm, the master can sound the alarm buzzer even if the criminal breaks or throws the slave. Therefore, the criminal cannot easily cancel the alarm.

According to the invention described in claim 9, when a window is opened, a door is opened, or an intruder exists inside the vehicle, the state of the standing wave inside the vehicle changes, so an alarm is issued. be able to. Therefore, even a portable theft detection device can detect an intruder.

According to the invention described in claim 10, the range in which the standing wave can be formed is widened, and the range in which theft can be detected is widened. Therefore, there is no blind spot in the theft detection device,
More difficult to steal.

According to the invention described in claim 11, the range in which the standing wave can be formed is widened, and the range in which theft can be detected is widened. Therefore, there is no blind spot in the theft detection device,
More difficult to steal.

According to the twelfth aspect of the invention, the video of the criminal can be viewed on the mobile terminal, which can be useful for arresting the criminal. Further, when the intruder is an acquaintance and the user has allowed the acquaintance to use the vehicle, the alarm can be promptly stopped.

[Brief description of drawings]

FIG. 1 is a conceptual diagram showing an arrangement of an anti-theft device according to an embodiment of the present invention in a vehicle.

FIG. 2 is a configuration diagram showing a first embodiment of a theft detection device serving as a parent device.

FIG. 3 is a perspective view showing a mobile terminal.

FIG. 4 is an example of displaying an in-vehicle image at the time of theft on a mobile terminal.

FIG. 5 is a perspective view showing a first embodiment of a theft detection device serving as a child device.

FIG. 6 shows a block diagram of a sensor serving as a human body detection sensor of an alarm device.

FIG. 7 shows a functional block diagram of the entire alarm system.

FIG. 8 is a flowchart of a decision logic circuit of a theft detection device that is a master device.

FIG. 9 is a flowchart of a decision logic circuit of a theft detection device which is a child device.

FIG. 10 is a flowchart of a control circuit of the portable terminal.

FIG. 11 is a configuration diagram showing a second embodiment of a theft detection device serving as a parent device.

FIG. 12 is a perspective view of the transmitter of FIG.

[Explanation of symbols]

1 vehicle 2 cup holder 3 door 4 base unit, base unit theft detection device 5, 6 slave unit, slave unit theft detection device 7 driver's seat 9 mobile terminal 11, 21, 24 antenna 12, 28 receiver 13 transmission Machine 14 Flashlight 15 Camera 16, 36 Judgment logic circuit 17, 26 Alarm buzzer 18, 25 Inclination sensor 19 Chain 19 Wire 20 Hook 22 Display 23 Button 27 Cylindrical mirror type piezoelectric ultrasonic transmitter 30 Intrusion sensor 31 Inversion amplification circuit 32 Non-inverting amplifier circuit with AGC (auto gain control) 33 Effective value circuit 34 Comparator 35 Speaker 36 Judgment logic circuit 37 Control circuit

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G08B 13/196 G08B 13/196 13/24 13/24

Claims (12)

[Claims] 1. A theft prevention device having two or more theft detection devices equipped with an alarm means, wherein when any one of the theft detection devices detects theft, another theft detection device gives an alarm. In-vehicle portable anti-theft device characterized by: 2. An anti-theft device comprising two or more portable theft detection devices equipped with alarm means and a mobile terminal, wherein the theft detection device and the mobile terminal are wirelessly communicated with each other. When one of the theft detection devices detects theft, the alarm means of the theft detection device is activated, and the theft detection device transmits theft information to the portable terminal, the theft prevention device. 3. The antitheft device according to claim 1 or 2, wherein the antitheft device includes a theft detection device for installation inside the vehicle, which is a master device, and a theft detection device for installation inside or outside the vehicle, which is a child device. Anti-theft device. 4. The antitheft device according to claim 3, wherein the theft detection device serving as the parent device includes a camera for photographing the inside of the vehicle. 5. The antitheft device according to claim 3, wherein the theft detection device serving as the parent device has a cylindrical outer shape and can be installed in a cup holder of a vehicle. 6. The antitheft device according to claim 3, wherein the theft detection device serving as the slave includes an inclination sensor that detects the inclination of itself and an alarm buzzer. 7. The antitheft device according to claim 1, wherein the theft detection device includes a wire having one end fixed and a hook capable of fixing the other end of the wire. 8. The anti-theft device according to claim 3, wherein the theft detection device serving as the parent device includes an inclination sensor that detects the inclination of itself and an alarm buzzer. 9. The theft detection device serving as a base unit according to claim 3, wherein a receiver that receives an ultrasonic wave or a sound wave, amplifies the received ultrasonic wave or a sound wave, and transmits the amplified standing wave inside the vehicle. An anti-theft device, comprising: a transmitter that forms a signal; and a theft detection unit that detects that the standing wave has collapsed from a received signal of the receiver. 10. The antitheft device according to claim 9, wherein the theft detection device serving as the master device includes at least three transmitters. 11. The theft detection device serving as the master device according to claim 9, wherein the directional transmitter is reflected by a cylindrical mirror to radiate a sound wave in a wide angle. Anti-theft device. 12. The theft detection device according to claim 2, further comprising a camera for photographing the inside of the vehicle, and after the theft detection device detects theft, the photographing information in the vehicle is transmitted to the portable terminal. Anti-theft device.